WO2020087651A1 - 背光模组及显示装置 - Google Patents

背光模组及显示装置 Download PDF

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Publication number
WO2020087651A1
WO2020087651A1 PCT/CN2018/119244 CN2018119244W WO2020087651A1 WO 2020087651 A1 WO2020087651 A1 WO 2020087651A1 CN 2018119244 W CN2018119244 W CN 2018119244W WO 2020087651 A1 WO2020087651 A1 WO 2020087651A1
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WO
WIPO (PCT)
Prior art keywords
light
backlight
backlight module
control layer
optical
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PCT/CN2018/119244
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English (en)
French (fr)
Inventor
程艳
Original Assignee
武汉华星光电技术有限公司
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Application filed by 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US16/464,299 priority Critical patent/US10914982B2/en
Publication of WO2020087651A1 publication Critical patent/WO2020087651A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133613—Direct backlight characterized by the sequence of light sources

Definitions

  • the invention relates to the field of display technology, in particular to a backlight module and a display device.
  • liquid crystal displays Liquid Crystal Display, LCD
  • LCD liquid crystal Display
  • other flat display devices have been widely used in mobile phones, TVs, and individuals due to their advantages of high image quality, power saving, thin body, and wide range of applications.
  • Various consumer electronic products such as digital assistants, digital cameras, notebook computers, and desktop computers have become the mainstream in display devices.
  • liquid crystal display devices which include a liquid crystal panel and a backlight module (backlight module) module).
  • the working principle of the liquid crystal panel is to place liquid crystal molecules in two parallel glass substrates. There are many vertical and horizontal thin wires between the two glass substrates. The liquid crystal molecules are controlled to change the direction through the power or not, and the light of the backlight module is refracted. Come out to produce the picture.
  • the backlight module Since the liquid crystal panel itself does not emit light, the light source provided by the backlight module is required to display images normally. Therefore, the backlight module becomes one of the key components of the liquid crystal display device.
  • the backlight module is divided into two types: an edge type backlight module and a direct type backlight module according to different incident positions of the light source.
  • Direct type backlight module is a backlight source such as cathode fluorescent lamp (Cold Cathode Fluorescent Lamp, CCFL) or Light Emitting Diode (LED) light source is arranged behind the liquid crystal panel, and the light is uniformized by the diffusion plate to form a surface light source and provided to the liquid crystal panel.
  • CCFL Cold Cathode Fluorescent Lamp
  • LED Light Emitting Diode
  • the direct type backlight module has the advantages of high cost performance and good optical stability.
  • Existing direct-lit backlight modules generally include a back frame, a backlight source disposed in the back frame, an optical film disposed opposite to the backlight source, and a diffusion plate disposed below the optical film.
  • the backlight sources of direct-lit backlight modules are multiple light-emitting diodes (Light Emitting Diode, LED), the brightness of the center and surrounding of each light-emitting diode is not uniform, which causes the problem of Hotspot to be more serious, which affects the display effect.
  • An object of the present invention is to provide a backlight module that can improve the uniformity of light distribution and reduce the thickness of the backlight module.
  • the object of the present invention is also to provide a display device which can improve the uniformity of light distribution and improve the display effect.
  • the present invention provides a backlight module including a light source board, a first optical control layer and a second optical control layer;
  • the light source board includes a plurality of light-emitting blocks arranged in an array, and each light-emitting block is provided with a plurality of backlight lamps arranged in an array and connected in parallel;
  • the first optical control layer and the light source board are arranged relatively spaced apart, the first optical control layer includes a plurality of control regions, each control region corresponds to a backlight setting, and the light transmittance of each control region is from the center The position increases toward the edge position;
  • the second optical control layer surrounds each light-emitting block to collect the light emitted by each light-emitting block, so that the light emitted by each light-emitting block is emitted to its corresponding control area to avoid different light-emitting areas
  • the light rays between the blocks crosstalk with each other.
  • the first optical control layer is a haze film, and each control area is provided with a plurality of spaced-apart light-transmitting holes. In the same control area, the density of the light-transmitting holes increases from the center to the edge.
  • the shape of the light transmitting hole is circular.
  • the haze of the first optical control layer is greater than 90%.
  • the second optical control layer is one or a combination of grating and optical angle modulator.
  • the backlight lamp is an LED lamp.
  • the backlight module further includes a diffusion film disposed on a side of the first optical control layer away from the light source board.
  • Each light-emitting block includes 16 backlight lamps arranged in 4 rows and 4 columns.
  • each control zone is directly above its corresponding backlight.
  • the present invention also provides a display device including the above-mentioned backlight module.
  • the present invention provides a backlight module including a light source board, a first optical control layer and a second optical control layer;
  • the light source board includes a plurality of light emitting blocks arranged in an array, each light emitting area Each block is provided with a plurality of backlight lamps arranged in an array and connected in parallel;
  • the first optical control layer and the light source board are relatively spaced apart, the first optical control layer includes a plurality of control regions, each control region corresponds to A backlight setting.
  • the light transmittance increases from the center to the edge.
  • the second optical control layer surrounds each light-emitting block, and can be collected by the second optical control layer.
  • the light emitted by one light-emitting block causes the light emitted by each light-emitting block to be emitted to its corresponding control area.
  • the light emitted by the backlight module is evenly distributed, improving the light output effect of the backlight module.
  • Structure It is simple and conducive to the thinning of the backlight module.
  • the invention also provides a method for improving the uniformity of light distribution and improving the display effect.
  • FIG. 1 is a perspective view of the backlight module of the present invention
  • FIG. 2 is a perspective view of the light source board and the second optical control layer of the backlight module of the present invention
  • FIG. 3 is a schematic diagram of the light source board of the backlight module of the present invention.
  • FIG. 4 is a schematic diagram of a light-emitting block in the light source panel of the backlight module of the present invention.
  • FIG. 5 is a top view of the first optical control layer of the backlight module of the present invention.
  • FIG. 6 is a schematic diagram of welding traces of the light-emitting block shown in FIG. 4.
  • the present invention provides a backlight module, including a light source board 1, a first optical control layer 2 and a second optical control layer 3;
  • the light source board 1 includes a plurality of light-emitting blocks 11 arranged in an array, and each light-emitting block 11 is provided with a plurality of backlight lamps 12 arranged in an array and connected in parallel;
  • the first optical control layer 2 is disposed relatively spaced from the light source board 1, the first optical control layer 2 includes a plurality of control regions 21, each control region 21 corresponds to a backlight 12, and each control region 21 The light transmittance increases from the center to the edge;
  • the second optical control layer 3 surrounds each light-emitting block 11 to collect the light emitted by each light-emitting block 11 so that the light emitted by each light-emitting block 11 is emitted to its corresponding control area 21 In order to avoid crosstalk between different light-emitting blocks 11.
  • each regulation area 21 is located directly above the corresponding backlight 12.
  • each backlight 12 when the backlight module works, the light emitted by each backlight 12 has the strongest intensity at its central position and gradually weakens from the central position to the edge position.
  • the light at the central position of each backlight 12 Corresponding to the center of its corresponding control area 21, the light at the edge position corresponds to the edge position of its corresponding control area 21, because the transmittance of each control area 21 increases from the center position to the edge position, so that each The light emitted by one backlight lamp 12 will be redistributed by its corresponding regulation area 21, so that the light emitted by each backlight lamp 12 is evenly emitted from its corresponding regulation area 21.
  • the first optical control layer 2 is a haze film, and each control region 21 is provided with a plurality of spaced-apart light-transmitting holes 22. In the same control region 21, the transparent The density of the light holes 22 gradually increases from the center position to the edge position.
  • the side of the first optical control layer 2 facing the light source has a reflection effect, and when the light generated by the backlight 12 reaches the portion of the first optical control layer 2 where the light transmission hole 22 is not provided, it can be reflected Partial reflection) returns to the light source board 1 and emits light at other positions. Therefore, the light generated by the backlight 12 can be distributed to penetrate through the light-transmitting holes 22 at different positions.
  • the shape of the light transmitting hole 22 is circular.
  • the haze of the first optical regulating layer 2 is greater than 90%.
  • the second optical control layer 2 is one or a combination of a grating and an optical angle modulator.
  • the second optical control layer 2 is a combination of a grating and an optical angle modulator, and the optical angle modulator modulates the light incident from the light-emitting block 11 into the second optical control layer 2 to a predetermined angle for exit,
  • the grating layer parallelizes the exit direction incident on the second optical control layer 2 to finally gather the light emitted by each light-emitting block 11 so that the light emitted by each light-emitting block 11 is emitted to its corresponding control area 21 , To avoid the purpose of cross-talk between different light-emitting blocks 11.
  • the backlight module further includes a diffusion film 4 disposed on a side of the first optical control layer 2 away from the light source board 1.
  • the backlight lamp 12 is an LED lamp.
  • each light-emitting block 11 includes 16 backlight lamps 12 arranged in 4 rows and 4 columns.
  • the welding route of the backlight 12 in each light-emitting block 11 is shown in FIG. 5, which includes a positive welding route 31 and a negative welding route 32, which are connected by the positive welding machine route 31
  • the positive electrode and the negative electrode welding line 32 of each backlight lamp 12 are connected to the negative electrode of each backlight lamp 12, so that the backlight lamps 12 in the same light-emitting block 11 are connected in parallel.
  • the present invention also provides a display device including the above-mentioned backlight module.
  • the present invention provides a backlight module including a light source board, a first optical control layer and a second optical control layer;
  • the light source board includes a plurality of light-emitting blocks arranged in an array, each light-emitting block A plurality of backlight lamps arranged in an array and connected in parallel are arranged in each;
  • the first optical control layer and the light source board are spaced apart, and the first optical control layer includes a plurality of control regions, each of which corresponds to one Backlight setting, in each control area, the light transmittance increases from the center to the edge position;
  • the second optical control layer surrounds each light-emitting block, which can gather each one through the second optical control layer
  • the light emitted by the light-emitting blocks causes the light emitted by each light-emitting block to be emitted to its corresponding control area.
  • the light emitted by the backlight module is evenly distributed to improve the light output effect of the backlight module.
  • the structure is simple , Conducive to the thinning of the backlight module.
  • the invention also provides a method for improving the uniformity of light distribution and improving the display effect.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

一种背光模组及显示装置。背光模组包括光源板（1）、第一光学调控层（2）及第二光学调控层（3）；光源板（1）包括阵列排布的多个发光区块（11），每一个发光区块（11）中均设有阵列排布且并联的多个背光灯（12）；第一光学调控层（2）与光源板（1）相对间隔设置，第一光学调控层（2）包括多个调控区（21），每一个调控区（21）对应一个背光灯（12）设置，每一个调控区（21）中，其透光率均从中心位置往边缘位置递增；第二光学调控层（3）围拢于每一个发光区块（11）的四周，能够通过第二光学调控层（3）收拢每一个发光区块（11）发出的光线，使得每一个发光区块（11）发出的光线均出射至其对应调控区（21），通过各个调控区（21）的调控使得背光模组的出射光均匀分布，改善背光模组的出光效果，结构简单，有利于背光模组的薄形化。

Description

背光模组及显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种背光模组及显示装置。
 背景技术
随着显示技术的发展，液晶显示器（Liquid Crystal Display，LCD）等平面显示装置因具有高画质、省电、机身薄及应用范围广等优点，而被广泛的应用于手机、电视、个人数字助理、数字相机、笔记本电脑、台式计算机等各种消费性电子产品，成为显示装置中的主流。
现有市场上的液晶显示装置大部分为背光型液晶显示装置，其包括液晶面板及背光模组(backlight module)。液晶面板的工作原理是在两片平行的玻璃基板当中放置液晶分子，两片玻璃基板中间有许多垂直和水平的细小电线，通过通电与否来控制液晶分子改变方向，将背光模组的光线折射出来产生画面。
由于液晶面板本身不发光， 需要借由背光模组提供的光源来正常显示影像，因此，背光模组成为液晶显示装置的关键组件之一。背光模组依照光源入射位置的不同分成侧入式背光模组与直下式背光模组两种。直下式背光模组是将背光源例如阴极萤光灯管 (Cold Cathode Fluorescent Lamp，CCFL)或发光二极管 (Light Emitting Diode，LED)光源设置在液晶面板后方，光线经扩散板均匀化后形成面光源提供给液晶面板。
直下式背光模组具有性价比高、光学稳定性佳等优点。现有的直下式背光模组一般包括：背框、设于所述背框内的背光源、与所述背光源相对间隔设置的光学膜片以及设于所述光学膜片下方的扩散板。随着显示技术的不断发展，全面屏目前市场的主流，直下式背光模组对于全面屏的实现具有重要的作用，目前直下式背光模组的背光源为阵列排布的多个发光二极管（Light Emitting Diode，LED），每个发光二极管的中心与四周的亮度不均匀，导致灯影（Hotspot）问题较为严重，影响显示效果。
 技术问题
本发明的目的在于提供一种背光模组，能够提升光线分布的均匀性，降低背光模组的厚度。
本发明的目的还在于提供一种显示装置，能够提升光线分布的均匀性，改善显示效果。
 技术解决方案
为实现上述目的，本发明提供一种背光模组，包括光源板、第一光学调控层及第二光学调控层；
所述光源板包括阵列排布的多个发光区块，每一个发光区块中均设有阵列排布且并联的多个背光灯；
所述第一光学调控层与所述光源板相对间隔设置，所述第一光学调控层包括多个调控区，每一个调控区对应一个背光灯设置，每一个调控区的透光率均从中心位置往边缘位置递增；
所述第二光学调控层围拢于每一个发光区块的四周，用于收拢每一个发光区块发出的光线，使得每一个发光区块发出的光线均出射至其对应调控区，避免不同发光区块之间的光线相互串扰。
所述第一光学调控层为雾度膜，每一个调控区中均设有多个间隔透光孔，在同一个调控区中，所述透光孔的密集程度从中心位置往边缘位置递增。
所述透光孔的形状为圆形。
所述第一光学调控层的雾度大于90%。
所述第二光学调控层为光栅和光角度调制器中的一种或二者的组合。
所述背光灯为LED灯。
所述背光模组还包括设于所述第一光学调控层远离所述光源板的一侧的扩散膜。
每一个发光区块包括排列成4行4列的16个背光灯。
每一个调控区的中心位置均位于其对应的背光灯的正上方。
本发明还提供一种显示装置，包括上述的背光模组。
 有益效果
本发明的有益效果：本发明提供一种背光模组，包括光源板、第一光学调控层及第二光学调控层；所述光源板包括阵列排布的多个发光区块，每一个发光区块中均设有阵列排布且并联的多个背光灯；所述第一光学调控层与所述光源板相对间隔设置，所述第一光学调控层包括多个调控区，每一个调控区对应一个背光灯设置，每一个调控区中，其透光率均从中心位置往边缘位置递增；所述第二光学调控层围拢于每一个发光区块的四周，能够通过第二光学调控层收拢每一个发光区块发出的光线，使得每一个发光区块发出的光线均出射至其对应调控区，通过各个调控区的调控使得背光模组的出射光均匀分布，改善背光模组的出光效果，结构简单，有利于背光模组的薄形化。本发明还提供一种能够提升光线分布的均匀性，改善显示效果。
 附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为本发明的背光模组的立体图；
图2为本发明的背光模组的光源板及第二光学调控层的立体图；
图3为本发明的背光模组的光源板的示意图；
图4为本发明的背光模组的光源板中一发光区块的示意图；
图5为本发明的背光模组的第一光学调控层的俯视图；
图6为图4所示的发光区块的焊接走线的示意图。
 本发明的实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图1至图3，本发明提供一种背光模组，包括光源板1、第一光学调控层2及第二光学调控层3；
所述光源板1包括阵列排布的多个发光区块11，每一个发光区块11中均设有阵列排布且并联的多个背光灯12；
所述第一光学调控层2与所述光源板1相对间隔设置，所述第一光学调控层2包括多个调控区21，每一个调控区21对应一个背光灯12设置，每一个调控区21的透光率均从中心位置往边缘位置递增；
所述第二光学调控层3围拢于每一个发光区块11的四周，用于收拢每一个发光区块11发出的光线，使得每一个发光区块11发出的光线均出射至其对应调控区21，避免不同发光区块11之间的光线相互串扰。
具体地，每一个调控区21的中心位置均位于其对应的背光灯12的正上方。
具体地，所述背光模组工作时，每一个背光灯12的发出的光，在其中心位置的强度最强并从中心位置向边缘位置逐渐减弱，此时每一个背光灯12中心位置的光线对应照射到其对应的调控区21的中心，边缘位置的光线对应照射到其对应的调控区21的边缘位置，由于每一个调控区21的透光率均从中心位置往边缘位置递增，从而每一个背光灯12的发出的光会被其对应调控区21进行重新分配，使得每一个背光灯12发出的光均匀的从其对应的调控区21中出射。
具体地，如图5所示，所述第一光学调控层2为雾度膜，每一个调控区21中均设有多个间隔透光孔22，在同一个调控区21中，所述透光孔22的密集程度从中心位置往边缘位置递增。
具体地，所述第一光学调控层2朝向光源的一面具有反射效果，当背光灯12产生的光线抵达第一光学调控层2上未设有透光孔22的部分，即可被反射（至少部分反射）回光源板1后于其他位置出光，因此可分配背光灯12产生的光线于不同位置的透光孔22穿射而出。
优选地，所述调控区21的中心位置无透光孔22。
优选地，所述透光孔22的形状为圆形。
优选地，所述第一光学调控层2的雾度大于90%。
具体地，所述第二光学调控层2为光栅和光角度调制器中的一种或二者的组合。
优选地，所述第二光学调控层2为光栅和光角度调制器的组合，所述光角度调制器将发光区块11入射到第二光学调控层2中的光线调制到一预设角度出射，所述光栅层将入射到第二光学调控层2的出射方向平行化，最终达到收拢每一个发光区块11发出的光线，使得每一个发光区块11发出的光线均出射至其对应调控区21，避免不同发光区块11之间的光线相互串扰的目的。
具体地，背光模组还包括设于所述第一光学调控层2远离所述光源板1的一侧的扩散膜4。
具体地，如图4所示，所述背光灯12为LED灯，优选地，每一个发光区块11包括排列成4行4列的16个背光灯12。进一步地，如图5所示，每一个发光区块11中的背光灯12的焊接路线如图5所示，其包括正极焊接路线31和负极焊接路线32，通过所述正极焊机路线31连接各个背光灯12的正极和负极焊接路线32连接各个背光灯12的负极，从而实现同一个发光区块11中的背光灯12并联到一起。
本发明还提供一种显示装置，包括上述的背光模组。
综上所述，本发明提供一种背光模组，包括光源板、第一光学调控层及第二光学调控层；所述光源板包括阵列排布的多个发光区块，每一个发光区块中均设有阵列排布且并联的多个背光灯；所述第一光学调控层与所述光源板相对间隔设置，所述第一光学调控层包括多个调控区，每一个调控区对应一个背光灯设置，每一个调控区中，其透光率均从中心位置往边缘位置递增；所述第二光学调控层围拢于每一个发光区块的四周，能够通过第二光学调控层收拢每一个发光区块发出的光线，使得每一个发光区块发出的光线均出射至其对应调控区，通过各个调控区的调控使得背光模组的出射光均匀分布，改善背光模组的出光效果，结构简单，有利于背光模组的薄形化。本发明还提供一种能够提升光线分布的均匀性，改善显示效果。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (18)

  1. 一种背光模组，包括光源板、第一光学调控层及第二光学调控层；
    所述光源板包括阵列排布的多个发光区块，每一个发光区块中均设有阵列排布且并联的多个背光灯；
    所述第一光学调控层与所述光源板相对间隔设置，所述第一光学调控层包括多个调控区，每一个调控区对应一个背光灯设置，每一个调控区的透光率均从中心位置往边缘位置递增；
    所述第二光学调控层围拢于每一个发光区块的四周，用于收拢每一个发光区块发出的光线，使得每一个发光区块发出的光线均出射至其对应调控区，避免不同发光区块之间的光线相互串扰。
  2. 如权利要求1所述的背光模组，其中，所述第一光学调控层为雾度膜，每一个调控区中均设有多个间隔透光孔，在同一个调控区中，所述透光孔的密集程度从中心位置往边缘位置递增。
  3. 如权利要求2所述的背光模组，其中，所述透光孔的形状为圆形。
  4. 如权利要求2所述的背光模组，其中，所述第一光学调控层的雾度大于90%。
  5. 如权利要求1所述的背光模组，其中，所述第二光学调控层为光栅和光角度调制器中的一种或二者的组合。
  6. 如权利要求1所述的背光模组，其中，所述背光灯为LED灯。
  7. 如权利要求1所述的背光模组，还包括设于所述第一光学调控层远离所述光源板的一侧的扩散膜。
  8. 如权利要求1所述的背光模组，其中，每一个发光区块包括排列成4行4列的16个背光灯。
  9. 如权利要求1所述的背光模组，其中，每一个调控区的中心位置均位于其对应的背光灯的正上方。
  10. 一种显示装置，包括背光模组，所述背光模组包括光源板、第一光学调控层及第二光学调控层；
    所述光源板包括阵列排布的多个发光区块，每一个发光区块中均设有阵列排布且并联的多个背光灯；
    所述第一光学调控层与所述光源板相对间隔设置，所述第一光学调控层包括多个调控区，每一个调控区对应一个背光灯设置，每一个调控区的透光率均从中心位置往边缘位置递增；
    所述第二光学调控层围拢于每一个发光区块的四周，用于收拢每一个发光区块发出的光线，使得每一个发光区块发出的光线均出射至其对应调控区，避免不同发光区块之间的光线相互串扰。
  11. 如权利要求10所述的显示装置，其中，所述第一光学调控层为雾度膜，每一个调控区中均设有多个间隔透光孔，在同一个调控区中，所述透光孔的密集程度从中心位置往边缘位置递增。
  12. 如权利要求11所述的显示装置，其中，所述透光孔的形状为圆形。
  13. 如权利要求11所述的显示装置，其中，所述第一光学调控层的雾度大于90%。
  14. 如权利要求10所述的显示装置，其中，所述第二光学调控层为光栅和光角度调制器中的一种或二者的组合。
  15. 如权利要求10所述的显示装置，其中，所述背光灯为LED灯。
  16. 如权利要求10所述的显示装置，其中，所述背光模组还包括设于所述第一光学调控层远离所述光源板的一侧的扩散膜。
  17. 如权利要求10所述的显示装置，其中，每一个发光区块包括排列成4行4列的16个背光灯。
  18. 如权利要求10所述的显示装置，其中，每一个调控区的中心位置均位于其对应的背光灯的正上方。
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